磁流变阻尼器Bingham力学模型改进及参数辨识  

Improvement of Bingham Mechanical Model of MRD and Parameter Identification

作　　者：王群[1] 马继超 朱雨睿 郭海霞 WANG Qun;MA Ji-chao;ZHU Yu-rui;GUO Hai-xia(Electromagnetic Protection and Detection Laboratory,Beijing University of Technology,Beijing 100124,China;Qingdao Sifang China Railway Rolling Stock Co.,Ltd.,Shandong Qingdao 266111,China)

机构地区：[1]北京工业大学电磁防护与检测实验室,北京100124 [2]中车青岛四方机车车辆股份有限公司,山东青岛266111

出　　处：《机械设计与制造》2024年第1期10-13,19,共5页Machinery Design & Manufacture

基　　金：国家重点研发计划子任务—高速磁浮车载电子系统可靠性关键技术研究(2016YFB1200602-37)。

摘　　要：磁流变阻尼器不仅具有阻尼快速响应、良好的温度稳定性、内部结构简单等优势,而且可以通过调节控制电流使阻尼器的出力值连续变化,实现阻尼力可控。由于磁流变阻尼器阻尼特性与内部磁流变液的磁流变效应有关,具体表现非常复杂,现有力学模型目精度不足,无法精确描述磁流变阻尼器的阻尼特性。在磁流变阻尼器力学性能测试基础上,应用分段拟合函数方法同时结合反正切函数模型改进模型,并辨识改进后力学模型中各参数。将改进后的Bingham模型与实际测试出力值进行对比,结果表明改进后的Bingham模型能够很好地解决Bingham力学模型在非线性滞回阶段出力值曲线与实际测试数据不符的问题,改进后模型总体出力值曲线与阻尼器实际出力值基本相同,模型精度大幅提升。此种改进方法为磁流变阻尼器建立高精度力学模型提供参考。Magnetorheological damper(MRD)not only has the advantages of fast damping response,good temperature stability and simplicity of structure,but also can adjust the control current to make the damping force value continuously change and real-ize the controllable damping force.Because the damping characteristics of MRD are related to the MR effect of internal MR fluid,the specific performance is very complex,and the existing mechanical models are not accurate enough to describe the damping characteristics of MRD accurately.Comparing the improved Bingham model with the experimental damping force value,the re-sults show that the improved Bingham model can well solve the problem that the damping force value curve of Bingham mechani-cal model is inconsistent with the experiment results in the nonlinear hysteretic phase.The overall output value curve of the im-proved model is basically the same as the experimental force value of the damper,and the model accuracy is greatly improved.This improved method provides a reference for the establishment of high-precision mechanical model of MRD.

关 键 词：磁流变阻尼器 Bingham模型 非线性滞回 参数辨识 

分 类 号：TH16[机械工程—机械制造及自动化] TH113.1